define(["dojo/_base/declare", "esri/layers/tiled"], function (declare) {
    return declare(esri.layers.TiledMapServiceLayer, {
        constructor: function () {
            this.spatialReference = new esri.SpatialReference({
                wkid: 102100
            });
            this.initialExtent = new esri.geometry.Extent(-1.9003965069419548E7, -236074.10024122056, 1.9003965069419548E7, 1.458937939490844E7, this.spatialReference);
            this.fullExtent = new esri.geometry.Extent(-2.0037507067161843E7, -1.9971868880408604E7, 2.0037507067161843E7, 1.997186888040863E7, this.spatialReference);
            this.tileInfo = new esri.layers.TileInfo({
                "rows": 256,
                "cols": 256,
                "dpi": 96,
                "origin": {
                    "x": -2.0037508342787E7,
                    "y": 2.0037508342787E7
                },
                "spatialReference": {
                    "wkid": 102100,
                    "latestWkid": 3857
                },
                "lods": [{
                    "level": 0,
                    "resolution": 156543.03392800014,
                    "scale": 5.91657527591555E8
                }, {
                    "level": 1,
                    "resolution": 78271.51696399994,
                    "scale": 2.95828763795777E8
                }, {
                    "level": 2,
                    "resolution": 39135.75848200009,
                    "scale": 1.47914381897889E8
                }, {
                    "level": 3,
                    "resolution": 19567.87924099992,
                    "scale": 7.3957190948944E7
                }, {
                    "level": 4,
                    "resolution": 9783.93962049996,
                    "scale": 3.6978595474472E7
                }, {
                    "level": 5,
                    "resolution": 4891.96981024998,
                    "scale": 1.8489297737236E7
                }, {
                    "level": 6,
                    "resolution": 2445.98490512499,
                    "scale": 9244648.868618
                }, {
                    "level": 7,
                    "resolution": 1222.992452562495,
                    "scale": 4622324.434309
                }, {
                    "level": 8,
                    "resolution": 611.4962262813797,
                    "scale": 2311162.217155
                }, {
                    "level": 9,
                    "resolution": 305.74811314055756,
                    "scale": 1155581.108577
                }, {
                    "level": 10,
                    "resolution": 152.87405657041106,
                    "scale": 577790.554289
                }, {
                    "level": 11,
                    "resolution": 76.43702828507324,
                    "scale": 288895.277144
                }, {
                    "level": 12,
                    "resolution": 38.21851414253662,
                    "scale": 144447.638572
                }, {
                    "level": 13,
                    "resolution": 19.10925707126831,
                    "scale": 72223.819286
                }, {
                    "level": 14,
                    "resolution": 9.554628535634155,
                    "scale": 36111.909643
                }, {
                    "level": 15,
                    "resolution": 4.77731426794937,
                    "scale": 18055.954822
                }, {
                    "level": 16,
                    "resolution": 2.388657133974685,
                    "scale": 9027.977411
                }, {
                    "level": 17,
                    "resolution": 1.1943285668550503,
                    "scale": 4513.988705
                }, {
                    "level": 18,
                    "resolution": 0.5971642835598172,
                    "scale": 2256.994353
                }, {
                    "level": 19,
                    "resolution": 0.29858214164761665,
                    "scale": 1128.497176
                }]
            });
            this.loaded = true;
            this.onLoad(this);
        },
        getTileUrl: function (level, row, col) {
            var resolution;
            /*for (var i = 0; i < this.tileInfo.lods.length; i++) {
                if (this.tileInfo.lods[i].level == level) {
                    resolution = this.tileInfo.lods[i].resolution;
                    break;
                }
            }*/
            //return root + "service/density?x=" + col + "&y=" + row + "&z=" + level + "&r=" + resolution + "&ox=" + this.tileInfo.origin.x + "&oy=" + this.tileInfo.origin.y + "&wkid=102100";
            var url = "";
            var num = 10 - level;
            if (num == 3) {
                url = "http://cpic2.edushi.com/cn/beijing/zh-chs/mappic/png" + (num) + "/" + (col - 20) + "," + (row - 20) + ".png";
            }
            else if (num == 2) {
                url = "http://cpic2.edushi.com/cn/beijing/zh-chs/mappic/png" + (num) + "/" + (col - 40) + "," + (row - 40) + ".png";
            }
            else if (num == 1) {
                url = "http://cpic2.edushi.com/cn/beijing/zh-chs/mappic/png" + (num) + "/" + (col - 80) + "," + (row - 80) + ".png";
            }
            return url;
        }
    });
});